Treatment method of low grade titanium-riched material chlorination dust collecting slag

A treatment method and a technology for collecting dust and slag, which are applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of polluting the environment, difficult industrial waste, and inability to achieve non-waste (hazardous) treatment, and achieve low treatment cost, The effect of simple processing technology

Inactive Publication Date: 2007-07-18
张清
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Problems solved by technology

No matter which of the above treatment methods can not achieve waste-free (hazardous) treatment, in addition to wastewater polluting the environment, there are also a large amount of industrial waste that is difficult to handle

Method used

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  • Treatment method of low grade titanium-riched material chlorination dust collecting slag

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[0011] As shown in the figure, the corresponding metal chlorides produced in the process of producing titanium tetrachloride are dust-collected and the dust-collected slag is discharged using a rotary valve under the protection of an inert gas. The dust-collected slag directly enters the beating tank for beating, and the beating liquid is used Corrosion-resistant mud pumps are used for circulation. When the chloride content of the circulating mud reaches 5-30%, it is poured into the neutralization reaction tank, and the neutralization reaction is carried out with lime while stirring, and the pH value of the neutralization liquid is controlled at 6-9. Then, these mixed muds are filtered in the filter, and the filtrate is calcium chloride solution, and the calcium chloride solution is further evaporated and concentrated to reach the required concentration, and then it can be sold as calcium chloride commodity. The filter cake is washed with fresh hot water at a temperature of 60...

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Abstract

A process for treating the low-grade Ti-enriched metallic chloride dust collected in production of TiCl4 includes such steps as continuously mixing it with water while stirring to become slurry until the content of Cl radicals is 5-30%, neutralizing reacting with lime, filtering to obtain calcium chloride solution, evaporating for concentrating to obtain commodity, washing the filtered cake to obtain calcium chloride solution, and reusing it.

Description

technical field [0001] The invention relates to a treatment method for chlorinated dust-collecting slag produced during the production of titanium tetrachloride by using low-grade titanium-rich materials, so that the wastes that are originally harmful to the environment become iron-making raw materials and chemical products. Background technique [0002] In the process of producing titanium tetrachloride by chlorination of titanium-rich materials (high-titanium slag or high-grade titanium concentrate or its mixture), the corresponding metal chlorides generated by all the metal oxides in the raw materials, in the gas phase separation process , except that titanium tetrachloride, silicon tetrachloride and vanadium oxychloride are left in the gas phase and recovered in the subsequent process, the rest of the metal chlorides are collected in the form of dust collection slag (mainly ferric chloride, aluminum chloride, A small amount of unreacted ultrafine material, etc.). Accord...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/36A62D3/33A62D101/49A62D101/43
Inventor 张清
Owner 张清
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